狄氏剂与艾氏剂有关,对蚯蚓的毒性是相似的.Dieldrin is related to aldrin, and its toxicity to earthworms is similar.艾氏剂和氯丹都是重要的杀虫剂.Both Aldrin and Chlordane are valuable insecticides....
他用尽所有可能的方法重复做这个实验。He re-ran the experiment every which way he could.他用尽全力拉减轻了重量的雪橇。He pulled the lightened sled with all his strength.他两只手平放在门上用尽全力推。He put both hands flat on the door and pushed as hard as he could....
This record figure was unequalled for 13 years.这项纪录保持了13年，无人能破。...an unequalled level of service.最上乘的服务The camera combines rugged reliability with unequalled optical performance and speed.这款相机既坚固耐用，又有超凡的光学性能和快门速度。an uneq...